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ISOUSB211: What are the functional differences between TUSB213 and ISOUSB211 and how do they differ in use?

Conor
Mastermind 8830 points
Part Number: ISOUSB211
Other Parts Discussed in Thread: TUSB213, , TUSB212, TUSB211

Hi, 

Q1.
What are the functional differences between TUSB213 and ISOUSB211 and how do they differ in use?

Q2.
The TUSB211 had cases where the equaliser was over-sensitive, causing communication problems. The TUSB212 is perceived as a countermeasure to this problem.
Has the ISOUSB211 solved the communication failure bug that the TUSB211 has?

Thanks,

Conor

  • +1
    TI__Genius 16080 points

    Hello Conor, 

    Thank you for reaching out. 

    1. TUSB213 and ISOUSB211 are different with regards to isolation. ISOUSB211 provides a high voltage isolation between the upstream and downstream devices in addition to functioning as a repeater for signal conditioning. 
      1. Isolation is particularly helpful to isolate the grounds of the USB controllers and protect sensitive controllers and signals. See the Precision labs series: Introduction to isolation for information on when isolation maybe needed in a system.
    2. The ISOUSB211 uses certain aspects of the TUSB211, but significant design changes were made to interface with the ISOUSB211's isolation technology and isolated power features. So, it should be treated as a separate device. As far as I know, we haven't seen an issue with the equalizer yet. 

    I hope this helps and let me know if you have further questions.

    Best,
    Andrew